diff --git a/mozilla/htmlparser/src/nsParser.cpp b/mozilla/htmlparser/src/nsParser.cpp
index b0ae7136688..2caa8f32a60 100644
--- a/mozilla/htmlparser/src/nsParser.cpp
+++ b/mozilla/htmlparser/src/nsParser.cpp
@@ -24,7 +24,7 @@
 #define DEBUG_XMLENCODING
 #define XMLENCODING_PEEKBYTES 64
 //#define TEST_DOCTYPES 
-//#define DISABLE_TRANSITIONAL_MODE
+#define DISABLE_TRANSITIONAL_MODE
 
 
 #include "nsParser.h"
diff --git a/mozilla/parser/htmlparser/src/nsParser.cpp b/mozilla/parser/htmlparser/src/nsParser.cpp
index b0ae7136688..2caa8f32a60 100644
--- a/mozilla/parser/htmlparser/src/nsParser.cpp
+++ b/mozilla/parser/htmlparser/src/nsParser.cpp
@@ -24,7 +24,7 @@
 #define DEBUG_XMLENCODING
 #define XMLENCODING_PEEKBYTES 64
 //#define TEST_DOCTYPES 
-//#define DISABLE_TRANSITIONAL_MODE
+#define DISABLE_TRANSITIONAL_MODE
 
 
 #include "nsParser.h"